Hardware Error — Internal hardware error

What does 123 mean?

A general internal hardware component within the inverter has failed. This requires professional diagnosis.

• Failure of an internal component
• Manufacturing defect
• Damage due to external factors (e.g., power surge)

Click steps to track your progress.

1. 1

   Safely power cycle your inverter by turning off its AC and DC disconnects (if applicable and accessible), waiting 5 minutes, then turning them back on.

2. 2

   Check for any visible damage to the inverter's exterior and ensure all accessible cables are securely connected.

3. 3

   Verify that all associated circuit breakers (for both AC and DC, if accessible) are in the 'ON' position. Refer to your SolarEdge user manual for what the inverter's LED lights indicate.

4. 4

   Open your SolarEdge monitoring app to see if there are any additional details about the 'Hardware Error' or if the status has changed.

5. 5

   If the error persists after these steps, the inverter requires professional service. Please contact your solar installer or SolarEdge support.